\documentclass[10pt,journal,final]{IEEEtran}%我们使用的是IEEEtran风格的外部模板，还有一些内置的article等，方括号的是参数，包括字号，期刊类型，所用模板是双列
 
%接下来我们在表格的编辑中，需要用usepackage导入一些package，就类似于python或C++中包的import和include吧。
\usepackage{multirow} %关于表格
\usepackage{booktabs}
\usepackage{makecell}
 
\usepackage{cite}%参考文献
 
% correct bad hyphenation here
\hyphenation{op-tical net-works semi-conduc-tor}

\begin{document}
%正文开始，把文字填到相应的部分
\title{learning LaTeX}
\author{tester}
 
\maketitle
\begin{abstract}
As recently as last week, Trump was calling outside advisers to complain about Bolton, people familiar with the conversations said. 
\end{abstract}
 
\begin{IEEEkeywords}
latex
\end{IEEEkeywords}
 
\end{enumerate}